Re: two nic cards on linux

From: George Monappallil (
Date: 02/14/05

Date: Sun, 13 Feb 2005 22:05:19 -0500

We are installing x-tunnel software and according to the developer it
requires that we have two nics with ips on the same segment. In Solaris, it
is easy to do this by having the MAC-address? parameter to true. It seems
oddly difficult on linux.


"Moe Trin" <ibuprofin@painkiller.example.tld> wrote in message
> In article <mF9Pd.5860$>, George
> wrote:
> >here's the output of the ifconfig. Both nics are supposed to be on
> >cables
> They may be, but
> >eth0 Link encap:Ethernet HWaddr 00:0E:0C:08:3F:67
> > inet addr: Bcast:
> >eth1 Link encap:Ethernet HWaddr 00:0E:0C:08:3F:66
> > inet addr: Bcast:
> They're on the same network - without using 'bonding' (see the
> Adv-Routing-HOWTO for details), the kernel is going to ignore the first
> configured - it's useless on classic Ethernet or Token Ring as only one
> computer can "talk" on the network at a time. The only other place
> where this configuration might be OK is in a 'bridging' configuration.
> See the HOWTOs.
> 297491 Sep 4 2003 Adv-Routing-HOWTO
> 29687 May 21 2002 Bridge
> 21151 Apr 26 2001 Bridge+Firewall
> 20465 Nov 9 2000 Bridge+Firewall+DSL
> So, which situation applies? In other words, what are you trying to do?
> Old guy

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